[2] In 1947 before the Partition of India, his family returned to his father's ancestral village of Adiabad, in Raipura Upazila, now in Narsingdi District, Bangladesh, where he matriculated from Adiabad Islamia High School in 1953 and was admitted to St. Gregory College (later called Notre Dame College, Dhaka).
[2] Financial hardship due to the death of his father forced him to withdraw from the college in 1957.
[2] His PhD work was conducted under a scholarship at the Central Institute of Indian Languages, Mysore, supervised by Debi Prasanna Pattanayak, and the title of his thesis (1977) is Controlled historical reconstruction based on five Bengali dialects.
[2] Maniruzzaman worked as a teacher in a number of degree colleges between 1961 and 1968, before joining the Bengali Department of Chittagong University in 1968, where he continued teaching until 2008,[2] except for a break to complete his PhD, and to work as a visiting lecturer at the All India Institute of Speech and Hearing in Mysore (1975–1977).
Maniruzzaman also served as Dean of the Faculty of Arts, University of Chittagong (1994–1996), and as Executive Director of the Nazrul Institute, Dhaka (1991–1993).